/Engine/Source/Runtime/Engine/Public/Elements/Component/ComponentElementHierarchyInterface.h
Appends to OutElementHandles.
virtual void GetChildElements ( const [FTypedElementHandle](API\Runtime\TypedElementFramework\Elements\Framework\FTypedElementHandle) & InElementHandle, [TArray](API\Runtime\Core\Containers\TArray)< [FTypedElementHandle](API\Runtime\TypedElementFramework\Elements\Framework\FTypedElementHandle) > & OutElementHandles, const bool bAllowCreate )